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#!/bin/sh
set -eu
base="${TMPDIR-/tmp}/mcpu-cpp-interface-cleanup-$$"
mkdir -p "$base/wrapper" "$base/after"
trap 'rm -rf "$base"' EXIT HUP INT TERM
# --version identifies the independent MCPU languages preprocessor.
"$MCPU_CPP" --version > "$base/version"
printf '%s\n' 'mcpu-cpp 1.0.6' 'MCPU languages preprocessor' > "$base/version.expected"
cmp "$base/version.expected" "$base/version"
# --help contains the current public interface, including --object-suffix,
# and puts the stdin/stdout notes after the option list.
"$MCPU_CPP" --help > "$base/help"
grep '^mcpu-cpp 1\.0\.6$' "$base/help" >/dev/null
grep '^MCPU languages preprocessor$' "$base/help" >/dev/null
grep '^ --object-suffix SFX set object suffix used for dependency targets$' "$base/help" >/dev/null
grep '^ --sys-root=PATH use PATH as MCPU root and do not read configuration files$' "$base/help" >/dev/null
help_version_line=$(grep -n '^ --version ' "$base/help" | cut -d: -f1)
input_note_line=$(grep -n "^If input is omitted or '-', read standard input\.$" "$base/help" | cut -d: -f1)
test "$input_note_line" -gt "$help_version_line"
grep "^If output is omitted or '-', write standard output\.$" "$base/help" >/dev/null
# --object-suffix requires an argument and changes the default dependency target.
cat > "$base/object.c" <<'SRC'
int x;
SRC
if "$MCPU_CPP" --no-config --object-suffix > /dev/null 2> "$base/object.err"; then
echo '--object-suffix unexpectedly accepted without an argument' >&2
exit 1
fi
grep "argument missing after '--object-suffix'" "$base/object.err" >/dev/null
"$MCPU_CPP" --no-config --object-suffix .obj -M "$base/object.c" > "$base/object.d"
grep '^object\.obj:' "$base/object.d" >/dev/null
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